Male and female are similar, but the plumage of the male is brighter while the female is duller. The back is gray-blue and the belly and face are yellow. The Canada Warbler has a black "pearl necklace". The Canada Warbler measures about 14 centimeters, has a wingspan of about 20 cm and weighs about 10 grams, which is about the weight of a strawberry! This warbler lives about 8 years.

Canada Warbler, like most warblers, is primarily insectivorous. This warbler defends its territory aggressively and may feign injury to lure predators away from the nest. It's one of the last warblers to arrive in the spring and one of the first one to leave for the heat when the fall come, it doesn't stay in Quebec for a long period. This warbler's nest is usually on the ground or very close to the ground, which is why it likes forests with dense understory (shrub layer)!